It's raining slightly. They are sneaking in the palace, they are about to make an attack to the tyrant hegemon. The moon is shining - and - a ray of the moon glances off their wet leather armor. They got spotted by a dwarf soldier: "Bad luck, huh?"

Pa is composed of 月 yüeh moon, its old radical, and an obsolete phonetic, and originally referred to the new moon. It is now classed under radical 雨 yü rain.